User Configuration > Administrative Templates > Microsoft Office 2016 > Business Data > Synchronization
User
HKCU\software\policies\microsoft\office\16.0\common\business data\synchronization
This policy setting allows you to specify the maximum number of times a failed synchronization operation can be retried. If you enable this policy setting, you may specify the maximum number of times a failed synchronization operation can be retried. If you disable or do not configure this policy setting, then a default value of 50 times will be used.